Table 2.
Baseline Aberrations Before Surgery
| Parameter | Entire patients | PRK | Femto-LASIK | P value | |
|---|---|---|---|---|---|
| Mean HOA 5 mm (µm) ± SD | 0.26 ± 0.11 | 0.25 ± 0.11 | 0.27 ± 0.11 | 0.25 | |
| Mean HOA 6 mm (µm) ± SD | 0.42 ± 0.17 | 0.42 ± 0.18 | 0.42 ± 0.16 | 0.81 | |
| Mean Sph. A 5 mm (µm) ± SD | 0.02 ± 0.03 | 0.02 ± 0.04 | 0.01 ± 0.01 | 0.07 | |
| Mean Sph. A 6 mm (µm) ± SD | 0.04 ± 0.06 | 0.04 ± 0.06 | 0.03 ± 0.06 | 0.58 | |
| Mean total A. 5 mm (µm) ± SD | 4.75 ± 0.96 | 4.57 ± 0.91 | 4.92 ± 0.99 | 0.04 | |
| Mean total A. 6 mm (µm) ± SD | 6.88 ± 1.40 | 6.67 ± 1.35 | 7.07 ± 1.43 | 0.11 | |
HOA = Higher order aberration; Sph A.= spherical aberration; A= aberration